Answer: C.
because I translated it to what the answer is
Because they have more underlying factors such as (straight) brown hair or (curly) blonde hair from different parents. A punnet square would be too big and confusing if we considered all the factors that came from the parents.
Homeostasis, aka your body maintaining life and the right amounts of stuff.
A. Trees regain their leaves
Answer:
They were not around at that time or either from it being so hot they just disappeared/melted.
Explanation: